/*
 * Copyright 2012 Marsrutai.lt
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package lt.marsrutai.mobile.android.intercept;

import java.lang.reflect.Method;
import java.util.Arrays;

import lt.marsrutai.mobile.android.cache.DataCache;
import lt.marsrutai.mobile.android.dao.annotation.Cache;

public class CacheInterceptor implements Interceptor {

    private DataCache dataCache;

    public CacheInterceptor(DataCache dataCache) {
        this.dataCache = dataCache;
    }

    @Override
    public Object interceptBefore(Method method, Object[] args)
    {
        if (null == method.getAnnotation(Cache.class)) {
            return null;
        }

        return dataCache.getCachedData(method.getName(), Arrays.asList(args));
    }

    @Override
    public void interceptAfter(Method method, Object[] args, Object result)
    {
        if (null == method.getAnnotation(Cache.class)) {
            return;
        }

        dataCache.cacheData(method.getName(), Arrays.asList(args), result);
    }

    public int getCacheSize() {
        return dataCache.getSize();
    }
}
